NOTE: When a building is “topped out” (the point of
construction when the structure has met its proposed structural top),
the building is officially ranked and is placed on the list. UC
indicates under construction: although the building has been “topped
out,” construction has not been completed. Height is measured from
sidewalk level of main entrance to structural top of building. This
includes spires, but does not include antennas or flagpoles.

Source: Council on Tall Buildings and Urban
Habitat, Lehigh University.